Mangwende, E. and Chirume, S. 2025. An APOS analysis of preservice mathematics teachers’ understanding of limits of trigonometric functions. JRAMathEdu (Journal of Research and Advances in Mathematics Education). 10, 4 (Oct. 2025), 240–253. DOI:https://doi.org/10.23917/jramathedu.v10i4.10440.